CN114294673A - Rotary air preheater sealing system sealed by adopting compressed air curtain - Google Patents
Rotary air preheater sealing system sealed by adopting compressed air curtain Download PDFInfo
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- CN114294673A CN114294673A CN202111679066.4A CN202111679066A CN114294673A CN 114294673 A CN114294673 A CN 114294673A CN 202111679066 A CN202111679066 A CN 202111679066A CN 114294673 A CN114294673 A CN 114294673A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention discloses a rotary air preheater sealing system adopting compressed air curtain sealing, which belongs to the technical field of air preheater sealing structures and comprises an air preheater assembling seat, wherein a sealing frame is fixedly installed at the top of the air preheater assembling seat, a driving part is fixedly arranged at the top of the sealing frame, and a heat exchange rotor mechanism is filled in an inner cavity of the air preheater assembling seat. According to the invention, the downward blowing air curtain can blow the radial filling sleeve at the top of the rotor grid plate downwards through the sealing effect of the drainage telescopic sleeve, the air curtain entering the radial filling sleeve can be blown into the radial filling sleeve after being dispersed through the spoiler in the radial filling sleeve, the blowing air entering the bottom side can reversely and upwards form the reverse blowing air curtain through the radian of the inner cavity of the backflow plate, a reverse multilayer air curtain can be formed in a single blowing process, the sealing effect on the rotor grid plate and the sealing triangular plate is further improved, meanwhile, the consumption of compressed air can be reduced, and the economic benefit is improved.
Description
Technical Field
The invention belongs to the technical field of air preheater sealing structures, and particularly relates to a rotary air preheater sealing system adopting compressed air curtain sealing.
Background
In order to improve the combustion efficiency of the boiler, the air entering the boiler generally needs to be preheated, and in order to better recover the combustion flue gas, an air preheater is generally used, and the air preheater is a heating surface for preheating the air entering the boiler to a certain temperature by the flue gas in a tail flue of the boiler through internal radiating fins, and is a device for improving the heat exchange performance of the boiler and reducing the energy consumption.
The normal air preheater generally adopts a double-sealing mode, and the air leakage rate of the air preheater is between 6 and 10 percent. The air leakage reconstruction of the existing air preheater mainly adopts the following technology: flexible soft sealing, dragging soft sealing, flexible contact sealing technology and air preheater positive pressure type sealing system are adopted; present air preheater sealing system all has the live time shorter, poor stability, the obscure problem of energy-conserving effect and transformation cost are higher, comparatively mainstream malleation air preheater sealing system is through adopting the fan to aspirate a large amount of power of flue gas consumption, influence the sealed throughput of air preheater, grid tray pivoted centrifugal force is simultaneously continuous with flue gas side dust and is thrown into the wall intracavity side into easily, it destroys air curtain border stability easily to last accumulational dust, need clear up the maintenance in stage, can not be fine satisfy the user demand.
Disclosure of Invention
The invention aims to: the rotary air preheater sealing system sealed by the compressed air curtain is provided for solving the problems that the existing air preheater sealing system is short in service time, poor in stability and unobvious in energy-saving effect and high in modification cost, and the positive pressure air preheater sealing system in the mainstream consumes a large amount of power by adopting a fan to suck smoke and influences the sealing treatment capacity of an air preheater.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rotary air preheater sealing system adopting compressed air curtain sealing comprises an air preheater assembly seat, the top of the air preheater assembly seat is fixedly provided with a sealing frame, the top of the sealing frame is fixedly arranged on a driving part, the inner cavity of the air preheater assembling seat is filled with a heat exchange rotor mechanism, one side of the sealing frame is fixedly provided with a sealing triangle plate, used for separating the cavity of the air preheater assembly base through a sealed triangle, a drainage mechanism is fixedly arranged between the bottom of the sealed triangle and one side of the inner cavity of the air preheater assembly base, the top of the sealed triangle is provided with a compressed air input pipe which is communicated with the drainage mechanism, is used for feeding compressed air into a gap between the compressed air closed heat exchange rotor mechanism and the sealing triangle through the compressed air input pipe, the top of the heat exchange rotor mechanism is provided with a limiting groove, and an adjustable radial sealing mechanism is connected in the limiting groove in a sliding manner;
the radial sealing mechanism comprises a radial filling sleeve, the radial filling sleeve is connected in a limiting groove in a sliding mode, a second magnetic seat is fixedly mounted on the bottom side of the radial filling sleeve, a spoiler is filled in an inner cavity of the radial filling sleeve, arc-shaped backflow plates are integrally connected to two sides of the spoiler, the backflow plates are attached to one side of the inner cavity of the radial filling sleeve, the drainage mechanism comprises a drainage telescopic sleeve, the drainage telescopic sleeve is connected in a drainage groove formed in the bottom side of a sealing triangular plate in a sliding mode, a first magnetic seat is fixedly arranged at the tail end of the drainage telescopic sleeve, a plurality of air curtain nozzles are fixedly arranged in the inner cavity of the drainage telescopic sleeve, and the air curtain nozzles are communicated with a top compressed air input pipe.
As a further description of the above technical solution:
the opposite surfaces of the first magnetic base and the second magnetic base are magnetically repelled, and the first magnetic base and the second magnetic base are permanent magnets.
As a further description of the above technical solution:
the heat exchange rotor mechanism comprises a plurality of rotor grid plates which are arranged in a surrounding mode, a plurality of connecting shafts are fixedly connected among the rotor grid plates, the tops of the connecting shafts are in transmission connection with one side of the driving portion, a plurality of rotor walls are fixedly connected among the rotating shaft grid plates, and limiting grooves are formed in the tops of the rotor grid plates.
As a further description of the above technical solution:
the drainage mechanism further comprises a side sealing sleeve fixedly arranged on a groove body on one side of the inner cavity of the pre-assembly seat, the side sealing sleeve is located on the bottom side of the sealing triangle plate, two sides of the inner cavity of the side sealing sleeve are fixedly connected with drainage plates, and the two side drainage plates are arranged upwards at included angles from the bottom side of the side sealing sleeve and used for pressurizing backflow gas to be conveyed into the drainage telescopic sleeve through the limitation of the drainage plates.
As a further description of the above technical solution:
one side of the drainage telescopic sleeve is communicated with a conical backflow cover, the backflow cover is attached to the top of the side sealing sleeve, and the included angle positions of the tail ends of the drainage plates on the two sides are located on one side of the backflow cover.
As a further description of the above technical solution:
the outer side wall of the drainage telescopic sleeve is fixedly connected with a gas collecting hood, and gas inlet grooves are formed in the two sides of the inner cavity of the drainage telescopic sleeve and correspond to the gas collecting hood and used for sweeping and radiating the inner side gas curtain nozzle through backflow gas.
As a further description of the above technical solution:
the inner cavity of the drainage telescopic sleeve is filled with a plurality of groups of radiating fins, radiating copper columns are welded among the radiating fins and fixedly installed at the tail end of the inner cavity of the drainage telescopic sleeve, and a fitting groove is formed in one side of each radiating fin and is fitted with the outer wall of the air curtain nozzle on one side.
As a further description of the above technical solution:
equal fixedly connected with support column all around the air preheater assembly seat, there is the spliced pole at support column top through bolt fixed mounting, and an organic whole is connected with the footstock between the spliced pole, footstock fixed connection is at air preheater assembly seat top.
As a further description of the above technical solution:
the other end of the compressed air input pipe is communicated with a compressed air generator, and the compressed air generator is fixedly installed on one side of the air preheater assembling seat.
As a further description of the above technical solution:
the cross section of the gas-collecting hood is conical, and the gas-collecting hood is a flexible plastic mat.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, when the compressed air generator generates compressed air and sends the compressed air into the air curtain nozzle in the drainage expansion sleeve, the air curtain nozzle can disperse and downwards spray air nozzles to form an air curtain, the air curtain can seal the top of the rotor grid plate by the air curtain, the sealing effect between the smoke side and the air side is improved, the sealing requirement can be met only by using a small amount of compressed air, meanwhile, a plurality of groups of distributed air curtains can perform air curtain blowing on the surface of the rotor grid plate when the rotor grid plate is initially rotated, simultaneously, the downwards blown air curtain can downwards blow the radial filling sleeve at the top of the rotor grid plate by the sealing effect of the drainage expansion sleeve, the air curtain entering the radial filling sleeve can disperse and then blow the radial filling sleeve by the spoilers in the radial filling sleeve, and the blown air curtain entering the bottom side can reversely upwards form a back blowing air curtain by the radian of the inner cavity of the radial filling sleeve, can form reverse multilayer air curtain when the single sweeps, further improve the sealed effect to rotor grid tray and sealed set square, can reduce the consumption to compressed gas simultaneously, improve economic benefits. The compressed gas supply device does not need a high-temperature-resistant design, is low in modification cost, is not easy to generate dust to accumulate, can blow off the dust on the rotor grid plate, ensures the stability of the air curtain, and prolongs the equipment maintenance period and the service life.
2. In the invention, when the air curtain which is abutted and reflows through the drainage telescopic sleeve can enter the drainage plate at one side under the limit of the rotor grid plate, the gas can enter the drainage telescopic sleeve through the guide effect of the included angle between the drainage plates at two sides, the reflowing gas which enters the drainage telescopic sleeve can dissipate the heat of the radiating fins, so that the quick heat dissipation can be carried out on the outer wall of the air curtain nozzle, the influence of the heat at the smoke side on the air curtain nozzle can be reduced, the service life of the air curtain nozzle is prolonged, the reflowing air curtain can carry out pressurized sweeping and removal on the smoke dust which is centrifugally whipped to one side of the side sealing sleeve, the bonding effect of the air curtain and the inner side of the air preheater assembling seat is avoided, meanwhile, the air curtain which reflows upwards can enter the air inlet groove under the conical limit action of the tail end air collecting cover, and the gas which enters the air inlet groove can be pressurized and blown out again through the reflowing gas in the auxiliary side sealing sleeve, thereby can realize the processing of sweeping again of gas curtain nozzle top side flue gas, improve whole durability and convenient maintenance ability.
3. According to the invention, when the rotor wall rotates through the rotation of the top driving part, when the rotor grid plate enters the bottom side of the sealing triangular plate, the second magnetic seat at the bottom side of the radial filling sleeve at the inner side of the rotor grid plate can repel the first magnetic seat at the top of the drainage telescopic sleeve by magnetic force, and the radial filling sleeve and the drainage telescopic sleeve can move away from each other when contacting under the action of reverse pushing of the magnetic force, so that the side edge of the air curtain can be protected by the radial filling sleeve and the drainage telescopic sleeve, the influence of the rotor grid plate and a smoke convection interference source on the stability of the air curtain at the sealing side is reduced, meanwhile, the friction during contact of the radial filling sleeve and the drainage telescopic sleeve which are away from each other is reduced, and the durability of the drainage telescopic sleeve and the radial filling sleeve is improved.
Drawings
FIG. 1 is a schematic perspective view of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 2 is a schematic diagram of an exploded structure of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 3 is a schematic perspective view of another embodiment of the sealing system of the rotary air preheater with a compressed air curtain seal according to the present invention;
FIG. 4 is a schematic perspective view of a heat exchange rotor of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 5 is a schematic perspective view of a radial sealing mechanism of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 6 is a schematic view of a split structure of a drainage mechanism of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 7 is a schematic view of an assembly structure of a drainage mechanism of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
FIG. 8 is a schematic perspective view of a side seal cartridge of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention; (ii) a
FIG. 9 is an enlarged schematic view of part A of a sealing system of a rotary air preheater sealed by a compressed air curtain according to the present invention;
fig. 10 is a schematic view showing the air curtain flow direction of a sealing system of a rotary air preheater using a compressed air curtain seal according to the present invention.
Illustration of the drawings:
1. an air preheater assembly seat; 2. a seal holder; 3. a drive section; 4. sealing the triangular plate; 5. a heat exchange rotor mechanism; 501. a rotor wall; 502. a rotor grid; 503. a connecting shaft; 6. a compressed air input pipe; 7. a drainage mechanism; 701. a drainage telescopic sleeve; 702. a side seal cartridge; 703. heat dissipation fins; 704. an air curtain nozzle; 705. a heat-dissipating copper pillar; 706. a reflow hood; 707. a gas-collecting hood; 708. an air inlet groove; 709. a fitting groove; 710. a drainage plate; 711. a first magnetic base; 8. a radial seal mechanism; 801. a radial filling sleeve; 802. a spoiler; 803. a return plate; 804. a second magnetic base; 9. a limiting groove; 10. a support pillar; 11. connecting columns; 12. a top seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a rotary air preheater sealing system adopting compressed air curtain sealing comprises an air preheater assembly base 1, wherein supporting columns 10 are fixedly connected to the periphery of the air preheater assembly base 1, connecting columns 11 are fixedly mounted at the tops of the supporting columns 10 through bolts, a top base 12 is integrally connected between the connecting columns 11, the top base 12 is fixedly connected to the top of the air preheater assembly base 1, a sealing frame 2 is fixedly mounted at the top of the air preheater assembly base 1, the top of the sealing frame 2 is fixedly arranged on a driving part 3, a heat exchange rotor mechanism 5 is filled in an inner cavity of the air preheater assembly base 1, a sealing triangular plate 4 is fixedly mounted on one side of the sealing frame 2 and used for separating cavities of the air preheater assembly base 1 through the sealing triangular plate 4, a drainage mechanism 7 is fixedly arranged between the bottom of the sealing triangular plate 4 and one side of the inner cavity of the air preheater assembly base 1, and a compressed air input pipe 6 is arranged at the top of the sealing triangular plate 4, the compressed air input pipe 6 is communicated with the drainage mechanism 7 and used for feeding compressed air through the compressed air input pipe 6 to seal a gap between the heat exchange rotor mechanism 5 and the sealing triangular plate 4, the top of the heat exchange rotor mechanism 5 is provided with a limiting groove 9, an adjustable radial sealing mechanism 8 is connected in the limiting groove 9 in a sliding mode, the other end of the compressed air input pipe 6 is communicated with a compressed air generator, and the compressed air generator is fixedly installed on one side of the air preheater assembling seat 1;
the radial sealing mechanism 8 comprises a radial filling sleeve 801, the radial filling sleeve 801 is slidably connected in a limiting groove 9, a second magnetic seat 804 is fixedly mounted at the bottom side of the radial filling sleeve 801, a spoiler 802 is filled in an inner cavity of the radial filling sleeve 801, arc-shaped backflow plates 803 are integrally connected to two sides of the spoiler 802, the backflow plates 803 are attached to one side of the inner cavity of the radial filling sleeve 801, the drainage mechanism 7 comprises a drainage telescopic sleeve 701, the drainage telescopic sleeve 701 is slidably connected in a drainage groove formed in the bottom side of a sealing triangular plate 4, a first magnetic seat 711 is fixedly arranged at the tail end of the drainage telescopic sleeve 701, a plurality of air curtain nozzles 704 are fixedly arranged in the inner cavity of the drainage telescopic sleeve 701, and the air curtain nozzles 704 are communicated with a top compressed air input pipe 6.
The implementation mode is specifically as follows: when the compressed air generator generates compressed air and sends the compressed air into the air curtain nozzle 704 in the drainage telescopic sleeve 701, the air curtain nozzle 704 can scatter air nozzles to spray downwards to form an air curtain, the air curtain can seal the top of the rotor grid plate 502 to improve the sealing effect between the smoke side and the air side, the sealing requirement can be met only by using a small amount of compressed air, meanwhile, a plurality of groups of distributed air curtains can sweep the surface of the rotor grid plate 502 through the air curtain when the rotor grid plate 502 is initially turned over, meanwhile, the downward swept air curtains can sweep the radial filling sleeve 801 at the top of the rotor grid plate 502 downwards through the sealing effect of the drainage telescopic sleeve 701, the air curtains entering the radial filling sleeve 801 can be scattered through the spoilers 802 in the radial filling sleeve 801 to sweep towards the radial filling sleeve 801, and the sweeping air entering the bottom side can reversely upwards form a back-sweeping air curtain through the radian of the inner cavity 803 of the backflow plate, can form reverse multilayer air curtain when the single sweeps, further improve the sealed effect to rotor grid 502 and sealed set square 4, can reduce the consumption to compressed gas simultaneously, improve economic benefits.
Referring to fig. 4-9, the heat exchange rotor mechanism 5 includes a plurality of circumferentially arranged rotor grid plates 502, a connecting shaft 503 is fixedly connected between the plurality of rotor grid plates 502, the top of the connecting shaft 503 is in transmission connection with one side of the driving portion 3, a plurality of rotor walls 501 are fixedly connected between the rotating shaft grid plates, the limiting groove 9 is arranged at the top of the rotor grid plate 502, the drainage mechanism 7 further includes a side sealing sleeve 702 fixedly arranged on a groove body at one side of the inner cavity of the pre-assembly seat, the side sealing sleeve 702 is positioned at the bottom side of the sealing triangle 4, both sides of the inner cavity of the side sealing sleeve 702 are fixedly connected with drainage plates 710, the drainage plates 710 at both sides are arranged at an upward included angle from the bottom side of the side sealing sleeve 702 and used for pressurizing and sending the backflow gas into the drainage telescopic sleeve 701 through the drainage plates 710, one side of the drainage telescopic sleeve 701 is communicated with a tapered backflow cover 706, and the backflow cover 706 is attached to the top of the side sealing sleeve 702, and the included angle position of the tail ends of the two side flow guide plates 710 is positioned at one side of the backflow hood 706, the outer side wall of the flow guide telescopic sleeve 701 is fixedly connected with a gas collecting hood 707, the two sides of the inner cavity of the flow guide telescopic sleeve 701 and the corresponding position of the gas collecting hood 707 are both provided with gas inlet grooves 708 for purging and radiating the inner side gas curtain nozzle 704 through backflow gas, the inner cavity of the flow guide telescopic sleeve 701 is filled with a plurality of groups of radiating fins 703, radiating copper columns 705 are welded among the plurality of radiating fins 703, the radiating copper columns 705 are fixedly installed at the tail end of the inner cavity of the flow guide telescopic sleeve 701, one side of each radiating fin 703 is provided with an attaching groove 709, and the attaching groove 709 is attached to the outer wall of the one side gas curtain nozzle 704.
The implementation mode is specifically as follows: when the air curtain which is propped and reflows through the drainage telescopic sleeve 701 can enter the drainage plate 710 on one side under the limit of the rotor grid plate 502, the tail end of the drainage plate 710 can enter the drainage telescopic sleeve 701 under the guide effect between the drainage plates 710 on two sides of air, flowing air can carry out contact conduction and diffusion on the heat of the air curtain nozzle 704 absorbed by the radiating fins 703 under the convection action in the drainage telescopic sleeve 701, and further can carry out quick heat dissipation on the outer wall of the air curtain nozzle 704, so that the influence of the heat on the smoke side on the air curtain nozzle 704 can be reduced, the service life of the air curtain nozzle 704 is prolonged, the reflowing air curtain can carry out pressurization blowing and removal on smoke dust which is centrifugally whipped to one side of the side sealing sleeve 702, the bonding effect of the air curtain and the inner side of the air preheater assembly seat 1 is avoided from being influenced, and meanwhile, the reflowing air curtain can enter the air inlet groove 708 under the conical limit action of the air collecting hood 707, the gas entering the gas inlet groove 708 can be pressurized and blown out again through the gas flowing back in the auxiliary side sealing sleeve 702, so that the secondary blowing treatment of the flue gas on the top side of the gas curtain nozzle 704 can be realized, and the flue gas continues to downwards enter the flue gas side of the boiler under the action of the gas curtain nozzle 704, and through the designed heat dissipation fins 703, the heat dissipation fins 703 can effectively improve the heat exchange area, and the heat exchange treatment effect on the gas curtain nozzle 704 is ensured.
Referring to fig. 5-6, the radial filling sleeve 801 is slidably connected in the limiting groove 9, the second magnetic base 804 is fixedly installed at the bottom side of the radial filling sleeve 801, the first magnetic base 711 is fixedly installed at the tail end of the drainage telescopic sleeve 701, the opposite surfaces of the first magnetic base 711 and the second magnetic base 804 are magnetically repulsive, and the first magnetic base 711 and the second magnetic base 804 are both permanent magnets.
The implementation mode is specifically as follows: when rotor wall 501 rotates through top drive portion 3 and rotates, rotor grid 502 is when entering into sealed set-square 4 bottom side, radial packing cover 801 bottom side second magnetic base 804 of rotor grid 502 inboard can carry out the magnetic force with the first magnetic base 711 at drainage telescope tube 701 top and repel each other the effect, radial packing cover 801 and drainage telescope tube 701 can be kept away from the motion each other when the contact under the reverse effect that promotes of magnetic force, thereby can make radial packing cover 801 and drainage telescope tube 701 can protect the air curtain side edge, reduce rotor grid 502 and the stability that the flue gas convection interference source influences the sealed side air curtain.
The working principle is as follows: when the device is used, compressed air is generated by a compressed air generator, the compressed air is sent into the air curtain nozzles 704 in the drainage telescopic sleeve 701, the air curtain nozzles 704 spray air nozzles downwards in a dispersed manner to form an air curtain, the air curtain seals the top of the rotor grid plate 502, multiple groups of distributed air curtains perform air curtain purging on the surface of the rotor grid plate 502 when the rotor grid plate 502 rotates in the beginning, the downward purged air curtain purges the radial filling sleeve 801 at the top of the rotor grid plate 502 downwards through the sealing effect of the drainage telescopic sleeve 701, the air curtain entering the radial filling sleeve 801 purges the radial filling sleeve 801 after being dispersed by the spoiler 802 in the radial filling sleeve 801, and the purged air entering the bottom side reversely upwards forms a reverse purging air curtain through the radian of the inner cavity 803 of the reflux plate to form a reverse multilayer air curtain;
when the air curtain which is abutted against the backflow through the drainage telescopic sleeve 701 enters the drainage plate 710 on one side under the limiting of the rotor grid plate 502, air enters the drainage telescopic sleeve 701 from the tail end of the drainage plate 710 under the guiding effect of an included angle between the drainage plates 710 on two sides, the backflow air entering the drainage telescopic sleeve 701 can dissipate heat of the heat dissipation fins 703, the outer wall of the air curtain nozzle 704 is quickly dissipated, the backflow air curtain performs pressurization blowing and removing on smoke dust which is centrifugally whipped to one side of the side sealing sleeve 702, the upward backflow air curtain enters the air inlet groove 708 under the conical limiting effect of the tail end air collecting cover 707, and the air which enters the air inlet groove 708 is pressurized and blown out again through the backflow air in the auxiliary side sealing sleeve 702;
when rotor wall 501 rotates through top drive portion 3 and rotates, rotor grid 502 is when entering into to sealed set-square 4 bottom side, radial packing cover 801 bottom side second magnetic base 804 of rotor grid 502 inboard can carry out the magnetic force with the first magnetic base 711 at drainage telescope tube 701 top and repel each other the effect, radial packing cover 801 and drainage telescope tube 701 can be kept away from the motion each other when the contact under the reverse effect that promotes of magnetic force, avoid radial packing cover 801 and drainage telescope tube 701 to contact relatively, reduce laminating frictional force, radial packing cover 801 and drainage telescope tube 701 can protect the air curtain side simultaneously, improve the stability of sealed side air curtain.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides an adopt sealed rotation air preheater sealing system of compressed air curtain, includes air preheater assembly seat (1), air preheater assembly seat (1) top fixed mounting has seal carrier (2), seal carrier (2) top sets firmly in having drive division (3), its characterized in that, air preheater assembly seat (1) inner chamber is filled there are heat transfer rotor mechanism (5), seal carrier (2) one side fixed mounting has sealed set-square (4) for through sealed set-square (4) interval air preheater assembly seat (1) cavity, drainage mechanism (7) have set firmly between sealed set-square (4) bottom and air preheater assembly seat (1) inner chamber one side, sealed set-square (4) top is equipped with compressed air input tube (6), compressed air input tube (6) are linked together with drainage mechanism (7), are used for sending into compressed air through compressed air input tube (6) and seal closed heat transfer rotor mechanism (5) and sealed three heat transfer rotor mechanisms (7) A limiting groove (9) is formed in the top of the heat exchange rotor mechanism (5), and an adjustable radial sealing mechanism (8) is connected in the limiting groove (9) in a sliding mode;
the radial sealing mechanism (8) comprises a radial filling sleeve (801), the radial filling sleeve (801) is connected in a limiting groove (9) in a sliding way, a second magnetic seat (804) is fixedly installed at the bottom side of the radial filling sleeve (801), a spoiler (802) is filled in the inner cavity of the radial filling sleeve (801), arc-shaped reflux plates (803) are integrally connected to two sides of the spoiler (802), the reflux plate (803) is jointed with one side of the inner cavity of the radial filling sleeve (801), the drainage mechanism (7) comprises a drainage telescopic sleeve (701), the drainage telescopic sleeve (701) is connected in a drainage groove arranged at the bottom side of the sealed triangle (4) in a sliding way, the tail end of the drainage telescopic sleeve (701) is fixedly provided with a first magnetic seat (711), the inner cavity of the drainage telescopic sleeve (701) is fixedly provided with a plurality of air curtain nozzles (704), the air curtain nozzle (704) is communicated with the top compressed air input pipe (6).
2. The rotary air preheater sealing system using compressed air curtain sealing as claimed in claim 1, wherein the first magnetic seat (711) and the second magnetic seat (804) are magnetically repulsive to each other, and the first magnetic seat (711) and the second magnetic seat (804) are both permanent magnets.
3. The rotary air preheater sealing system adopting the compressed air curtain for sealing is characterized in that the heat exchange rotor mechanism (5) comprises a plurality of rotor grid plates (502) which are arranged in a surrounding manner, a connecting shaft (503) is fixedly connected among the plurality of rotor grid plates (502), the top of the connecting shaft (503) is in transmission connection with one side of the driving part (3), a plurality of rotor walls (501) are fixedly connected among the rotating shaft grid plates, and the limiting groove (9) is formed in the top of each rotor grid plate (502).
4. The rotary air preheater sealing system adopting the compressed air curtain for sealing is characterized in that the drainage mechanism (7) further comprises a side sealing sleeve (702) fixedly arranged on a groove body on one side of the inner cavity of the preheater assembling seat, the side sealing sleeve (702) is positioned on the bottom side of the sealing triangular plate (4), both sides of the inner cavity of the side sealing sleeve (702) are fixedly connected with drainage plates (710), and the drainage plates (710) on both sides are arranged upwards at an included angle from the bottom side of the side sealing sleeve (702) and used for pressurizing and conveying backflow gas into the drainage telescopic sleeve (701) through the limitation of the drainage plates (710).
5. The rotary air preheater sealing system adopting the compressed air curtain for sealing is characterized in that a conical backflow cover (706) is communicated with one side of the drainage telescopic sleeve (701), the backflow cover (706) is attached to the top of the sealing sleeve (702) on one side, and the included angle position of the tail ends of the drainage plates (710) on the two sides is located on one side of the backflow cover (706).
6. The rotary air preheater sealing system adopting compressed air curtain sealing as claimed in claim 1, wherein a gas collecting hood (707) is fixedly connected to an outer side wall of the drainage telescopic sleeve (701), and gas inlet grooves (708) are respectively formed in two sides of an inner cavity of the drainage telescopic sleeve (701) and corresponding to the gas collecting hood (707) and used for purging and dissipating heat of the inner side gas curtain nozzle (704) through backflow gas.
7. The rotary air preheater sealing system adopting the compressed air curtain for sealing is characterized in that a plurality of groups of heat dissipation fins (703) are filled in an inner cavity of the drainage telescopic sleeve (701), heat dissipation copper columns (705) are welded among the heat dissipation fins (703), the heat dissipation copper columns (705) are fixedly installed at the tail end of the inner cavity of the drainage telescopic sleeve (701), a fitting groove (709) is formed in one side of each heat dissipation fin (703), and the fitting groove (709) is fitted with the outer wall of the air curtain nozzle (704) on one side.
8. The rotary air preheater sealing system adopting the compressed air curtain for sealing is characterized in that supporting columns (10) are fixedly connected to the periphery of the air preheater assembly base (1), connecting columns (11) are fixedly mounted at the tops of the supporting columns (10) through bolts, a top base (12) is integrally connected between the connecting columns (11), and the top base (12) is fixedly connected to the top of the air preheater assembly base (1).
9. The rotary air preheater sealing system using compressed air curtain sealing as claimed in claim 1, wherein the other end of the compressed air input pipe (6) is communicated with a compressed air generator, and the compressed air generator is fixedly installed on one side of the air preheater mounting base (1).
10. The rotary air preheater sealing system using compressed air curtain sealing as claimed in claim 6, wherein the cross-sectional shape of the gas collecting channel (707) is conical, and the gas collecting channel (707) is a flexible plastic pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679066.4A CN114294673B (en) | 2021-12-31 | 2021-12-31 | Rotary air preheater sealing system sealed by adopting compressed air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679066.4A CN114294673B (en) | 2021-12-31 | 2021-12-31 | Rotary air preheater sealing system sealed by adopting compressed air curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114294673A true CN114294673A (en) | 2022-04-08 |
| CN114294673B CN114294673B (en) | 2022-12-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123154C1 (en) * | 1995-06-08 | 1998-12-10 | Ростовская ТЭЦ-2 филиал АО "Ростовэнерго" | Rotary regenerative air preheater |
| KR100937107B1 (en) * | 2009-09-24 | 2010-01-15 | 김창우 | Gas preheating apparatus |
| CN103939936A (en) * | 2014-04-24 | 2014-07-23 | 燕瑛侠 | Multistage-pair air-sealing-type sealing system set of rotary air pre-heaters |
| CN106524817A (en) * | 2016-10-27 | 2017-03-22 | 盛春 | Compressed air sealing system and rotary air preheater comprising same |
| CN113154440A (en) * | 2021-04-07 | 2021-07-23 | 苏州西热节能环保技术有限公司 | Pressurization sealing system suitable for rotary air preheater |
-
2021
- 2021-12-31 CN CN202111679066.4A patent/CN114294673B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123154C1 (en) * | 1995-06-08 | 1998-12-10 | Ростовская ТЭЦ-2 филиал АО "Ростовэнерго" | Rotary regenerative air preheater |
| KR100937107B1 (en) * | 2009-09-24 | 2010-01-15 | 김창우 | Gas preheating apparatus |
| CN103939936A (en) * | 2014-04-24 | 2014-07-23 | 燕瑛侠 | Multistage-pair air-sealing-type sealing system set of rotary air pre-heaters |
| CN106524817A (en) * | 2016-10-27 | 2017-03-22 | 盛春 | Compressed air sealing system and rotary air preheater comprising same |
| CN113154440A (en) * | 2021-04-07 | 2021-07-23 | 苏州西热节能环保技术有限公司 | Pressurization sealing system suitable for rotary air preheater |
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| CN114294673B (en) | 2022-12-02 |
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